Description: chardev: Avoid potential use-after-free in 'chrdev_open()'
References:
Notes:
Bugs:
upstream: released (5.5-rc6) [68faa679b8be1a74e6663c21c3a9d25d32f1c079]
4.19-upstream-stable: released (4.19.96) [ec576895d61356a2cab096e1ca23bf7cc765e5b2]
4.9-upstream-stable: released (4.9.210) [3cce9309df73def742692ffddde05638b6eda6d9]
3.16-upstream-stable: released (3.16.83) [6a0a5980a6092c82258858c7588f8bbb36df6026]
sid: released (5.4.13-1)
4.19-buster-security: released (4.19.98-1)
4.9-stretch-security: released (4.9.210-1)
3.16-jessie-security: released (3.16.84-1)